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Cheap flights from Ontario to Duluth from $239

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Duluth departing on 5/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Ontario to Duluth

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 6:07 pm
ONT
-
DLH
9h 07m
1 stop
United Airlines Logo
3:08 pm - 10:31 pm
DLH
-
ONT
9h 23m
1 stop
$458United Airlines
Thu, Apr 23 - Wed, Apr 29
Delta Logo
10:25 pm - 11:56 am
ONT
-
DLH
11h 31m
2 stops
Delta Logo
5:00 am - 12:23 pm
DLH
-
ONT
9h 23m
2 stops
$479Delta
Wed, Apr 8 - Sun, Apr 12
United Airlines Logo
7:00 am - 6:07 pm
ONT
-
DLH
9h 07m
1 stop
United Airlines Logo
3:08 pm - 10:31 pm
DLH
-
ONT
9h 23m
1 stop
$525United Airlines
Wed, Apr 8 - Sun, Apr 12
United Airlines Logo
1:34 pm - 12:29 am
ONT
-
DLH
8h 55m
2 stops
United Airlines Logo
3:08 pm - 10:31 pm
DLH
-
ONT
9h 23m
1 stop
$543United Airlines
Thu, Apr 23 - Wed, Apr 29
United Airlines Logo
6:30 am - 5:34 pm
ONT
-
DLH
9h 04m
1 stop
United Airlines Logo
3:03 pm - 10:46 pm
DLH
-
ONT
9h 43m
1 stop
$562United Airlines
Sat, May 23 - Tue, May 26
United Airlines Logo
5:45 am - 11:08 pm
ONT
-
DLH
15h 23m
2 stops
United Airlines Logo
3:03 pm - 10:46 pm
DLH
-
ONT
9h 43m
1 stop
$568United Airlines
Sat, May 23 - Tue, May 26
United Airlines Logo
6:59 pm - 10:34 am
ONT
-
DLH
13h 35m
2 stops
United Airlines Logo
2:57 pm - 10:35 pm
DLH
-
ONT
9h 38m
1 stop
$591United Airlines
Fri, May 8 - Mon, May 11
United Airlines Logo
7:00 am - 6:07 pm
ONT
-
DLH
9h 07m
1 stop
United Airlines Logo
3:08 pm - 10:31 pm
DLH
-
ONT
9h 23m
1 stop
$608United Airlines
Thu, Apr 23 - Fri, Apr 24
United Airlines Logo
7:00 am - 5:35 pm
ONT
-
DLH
8h 35m
1 stop
United Airlines Logo
2:57 pm - 10:35 pm
DLH
-
ONT
9h 38m
1 stop
$613United Airlines
Thu, Apr 30 - Mon, May 4
United Airlines Logo
6:49 pm - 10:39 am
ONT
-
DLH
13h 50m
2 stops
United Airlines Logo
3:08 pm - 10:31 pm
DLH
-
ONT
9h 23m
1 stop
$614United Airlines
Thu, Apr 23 - Fri, Apr 24

United Airlines flights from Ontario to Duluth

Our best United Airlines deals on Ontario to Duluth flight tickets
United Airlines
Apr 23
ONT7:00 amOntario
9h 07m
1 stop
DLH6:07 pmDuluth Intl
Apr 29
DLH3:08 pmDuluth Intl
9h 23m
1 stop
ONT10:31 pmOntario
$458
United Airlines
Apr 8
ONT7:00 amOntario
9h 07m
1 stop
DLH6:07 pmDuluth Intl
Apr 12
DLH3:08 pmDuluth Intl
9h 23m
1 stop
ONT10:31 pmOntario
$525
United Airlines
Apr 23
ONT1:34 pmOntario
8h 55m
2 stops
DLH12:29 amDuluth Intl
Apr 29
DLH3:08 pmDuluth Intl
9h 23m
1 stop
ONT10:31 pmOntario
$543

Delta flights from Ontario to Duluth

Our best Delta deals on Ontario to Duluth flight tickets
Delta
Apr 8
ONT10:25 pmOntario
11h 31m
2 stops
DLH11:56 amDuluth Intl
Apr 12
DLH5:00 amDuluth Intl
9h 23m
2 stops
ONT12:23 pmOntario
$479
Delta
Jun 15
ONT9:40 amOntario
11h 10m
2 stops
DLH10:50 pmDuluth Intl
Jun 24
DLH5:05 amDuluth Intl
9h 05m
2 stops
ONT12:10 pmOntario
$673
Delta
Apr 9
ONT10:25 pmOntario
11h 31m
2 stops
DLH11:56 amDuluth Intl
Apr 12
DLH5:00 amDuluth Intl
9h 23m
2 stops
ONT12:23 pmOntario
$679

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Duluth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 26, 2026.
Use the filters below to find and compare flights from Ontario to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Thu 4/23

7:00 am-6:07 pm

1 stop9h 07m

Duluth Intl

Wed 4/29

3:08 pm-10:31 pm

1 stop9h 23m

$458

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Wed 4/8

10:25 pm-11:56 am

2 stops11h 31m

Duluth Intl

Sun 4/12

5:00 am-12:23 pm

2 stops9h 23m

$479

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Wed 4/8

7:00 am-6:07 pm

1 stop9h 07m

Duluth Intl

Sun 4/12

3:08 pm-10:31 pm

1 stop9h 23m

$525

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Thu 4/23

1:34 pm-12:29 am

2 stops8h 55m

Duluth Intl

Wed 4/29

3:08 pm-10:31 pm

1 stop9h 23m

$543

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 5/23

6:30 am-5:34 pm

1 stop9h 04m

Duluth Intl

Tue 5/26

3:03 pm-10:46 pm

1 stop9h 43m

$562

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 5/23

5:45 am-11:08 pm

2 stops15h 23m

Duluth Intl

Tue 5/26

3:03 pm-10:46 pm

1 stop9h 43m

$568

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Fri 5/8

6:59 pm-10:34 am

2 stops13h 35m

Duluth Intl

Mon 5/11

2:57 pm-10:35 pm

1 stop9h 38m

$591

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Thu 4/23

7:00 am-6:07 pm

1 stop9h 07m

Duluth Intl

Fri 4/24

3:08 pm-10:31 pm

1 stop9h 23m

$608
Quickest round-trip

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Thu 4/30

7:00 am-5:35 pm

1 stop8h 35m

Duluth Intl

Mon 5/4

2:57 pm-10:35 pm

1 stop9h 38m

$613

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Thu 4/23

6:49 pm-10:39 am

2 stops13h 50m

Duluth Intl

Fri 4/24

3:08 pm-10:31 pm

1 stop9h 23m

$614

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Duluth from

How to get the cheapest flight ticket from Ontario to Duluth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Ontario to Duluth flights?

You could potentially save up to 37% on your flight if you consider stops on a Ontario to Duluth flight.

When to book flights from Ontario to Duluth

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Duluth according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Duluth (ONT to DLH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Duluth

Fastest flight time

9h 04m

Direct flights

None
The fastest flight from Ontario to Duluth takes 9h 04m
There are no direct flights from Ontario to Duluth. There are no popular flight routes from Ontario to Duluth.
Search flight deals

  • How far is Ontario to Duluth Intl by plane?

    Duluth Intl is 1593.1 mi away from Ontario. Typically, this will take 9h 04m by plane in normal conditions.

  • When did momondo last update prices for flights from Ontario Airport to Duluth Intl Airport?

    Prices for flights from Ontario Airport to Duluth Intl Airport were last updated today.

  • How old do you have to be to fly from Ontario Airport to Duluth Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Duluth Intl Airport.

  • What documentation or ID do you need to fly to Duluth Intl Airport?

    The travel and health documents required for your trip to Duluth Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Duluth Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior
Hayward
Cloquet

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Duluth?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Duluth from Ontario.

Can I find flights from Ontario to Duluth with flexible booking policies on momondo?

All flight searches from Ontario to Duluth on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Duluth?

Once you have performed a search for Ontario to Duluth flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Duluth right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Duluth flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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